US PATENT SUBCLASS 184 / 32
.~.~.~ Oscillating piston
Current as of:
June, 1999
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184 /
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LUBRICATION
14
DF
LUBRICATORS
{18}
*
DD
.~ Force feed {5}
26
DF
.~.~ Pumps {10}
32
.~.~.~ Oscillating piston
DEFINITION
Classification: 184/32
The piston is so arranged that by its own oscillation it covers and uncovers ports, so that during its forcing stroke a lubricant is forced through an outlet-passage and upon its suction-stroke the lubricant is admitted to the pump-cylinder.